Check these out,
I think in this first one I "write" a lot about working by hand with a lot of details but no videos..
Man versus Machine
This one also has a lot of detail about working by hand,
1-Step versus 3-Step Process by Hand
This one shows a possible problem when working by hand,
Finger Marks
Here's an old short video clip that shows me working with a version of ScratchX by hand when it was still made using Diminishing Abrasives. The new version uses SMA technology but I would still use the product the same way if I were trying to remove swirls and scratches.
60corvette_scratchx2.wmv